Ahlstrom shares subscribed with option rights

Ahlstrom Corporation STOCK EXCHANGE ANNOUNCEMENT 22.5.2007
A total of 62,611 new shares of Ahlstrom Corporation have been subscribed with option rights under the company's stock option programs I (2001) and II (2001). A corresponding increase of EUR 93,916.50 in Ahlstrom's share capital has been entered in the Trade Register today.
After the increase, the total number of Ahlstrom Corporation shares is 46,670,608 and the share capital amounts to EUR 70,005,912.00.
The shares will be traded on the Helsinki Stock Exchange as old shares as of May 23, 2007.
Ahlstrom Corporation
Gustav Adlercreutz
Senior Vice President, Administration and General Counsel
Helsinki Stock Exchange
Main media

For further information, please contact:
Gustav Adlercreutz, Ahlstrom Corporation, tel +358 10 888 4727.
Ahlstrom in brief
Ahlstrom is a global leader in the development, manufacture and marketing of high performance fiber-based materials. Nonwovens and specialty papers, made by Ahlstrom, are used in a large variety of everyday products, such as filters, wipes, flooring, labels, and tapes. Based upon its unique fiber expertise and innovative approach, the company has a strong market position in several business areas in which it operates. Ahlstrom's 5,700 employees serve customers via sales offices and production facilities in more than 20 countries on six continents. In 2006, Ahlstrom's net sales amounted to EUR 1.6 billion. Ahlstrom's share is listed on the Helsinki Stock Exchange. The company website is www.ahlstrom.com.